In this article we will discuss about:- 1. Definition of Biofilters 2. Microbial Potential of Biofilters 3. Biofilter Media 4. Mechanism. Biofiltration is a new technology used to purify contaminated air evolved from volatile organic and inorganic compounds by involving microorganisms. It is a low cost technology gradually becoming popular due to simple operational and waste-removal efficiencies. Biofiltration is the [...]
There are four main physiological mechanism of heavy metal resistance: (a) Inactivation, (b) Impermeability, (c) By- pass, and (d) Altered target site(s). On the other hand, earlier studies reported that fungi tend to survive heavy metal stress either by adaptation or mutation. Not only fungi but few algae such as Stigeoclonium tenue can grow in a zinc-rich effluent and showed [...]
Following are the factors affecting methane production: 1. Slurry: Proper solubilisation of organic materials (the ratio between solid and water) should be 1:1 when it is house hold type. 2. Seeding: In the beginning, seeding of slurry with small amount of sludge of another digester activates methane evolution. Sludge contains acetogenic and methanogenic bacteria. 3. pH: For the production of [...]